Driving mechanism for slicing machines



Nov. 28, 1933. F. 1.. VAN WEENEN DRIVING MECHANISM FOR SLICING MACHINESFiled Nov. 14, 1929 4 Sheets-Sheet 1 Nov. 28, 1933. F. 1.. VAN WEENENDRIVING MECHANISM FOR SLICING MACHINES Filed Nov. 14, 1929 4Sheets-Sheet 2 Nov. 28, 1933. F. 1.. VAN WEENEN ,9

DRIVING MECHANISM FOR SLICING MACHINES Filed Nov. 14, 1929 4Sheets-Sheet 3 Q & v3

g 0/1. MW,

v Patented Nov. 28,? 1933 i TED STAT S.

Application November 14, 1929, Serial No. 107,268, and in Great BritainNovember 21, 1;),25

This invention relates to machines of the type in which thereis arotating slicing knife and a carriage which reciprocates past theslicing 'knije so that a substance supported on the carriage may havesuccessive slices cut therefrom by' thc knife as the substance isrecurrently in'ovedfpas't the slicing knife. The substance to be slicedis fed with a step by stepmove-ment in a direction toward the cuttingplane of the knife.

vide a drive for such a slicing machine which will permit drivingtheknife and carriage in unison by power or by manual means and also foroperating either the carriage or knife by power or for operating thecarriage only "by manual means. Also, it is possible to drive one of theparts by hand and the other by power. Such an arrangementis' desirablewhen it is desired to use the machine for slicing a variety ofsubstances. y Another object of this invention is the provision ofmechanism for accomplishing the above noted results and which mechanismreadily enables one to change from one mode of .operationto another.Another object of this invention is'the provision of one or more.double-acting'clutch devices interposed between the power drive and themanual .Fig. 1 represents a side elevation'oi a device em-. 'bodying myinvention with the 'coverplate over,

part or the driving mechanism removed;

Fig. 2 is a section substantially on the line 2 2 .of Fig. 1; Fig. 3 isa cross section on an enlarged scale of certain of the parts showninFig.2;

4U v Fig. 4 is a cross section on the line 44 of Fig. 3;

Fig. 5 is a cross section on the line 5-5 of Fig.

$; and

Fig. 6 is a detail of the mounting for the pulley" which is drivendirectly from the. motor.

Referring more particularly to Fig. v1, it will be noted that theslicing machine comprises a base,

1 having guide rods 2 supported on suitable brack-v ets such as 3; as inthe ordinary construction of such slicing machines. A carriage 4 isadapted to be supported and guided bythe guide rods 2 as the carriage ismoved therealong. The carriage is reciprocated along theguide rods 2 bymeans of the rotating crank 5 and connecting rod 6, the; latter beingpivotally connected to thecrank and 'A fiy-wheel 11 having a handle :12for rotating rotation of the fiy-wheel '11 caus'es' th'e c'arriage Oneobject of the present invention is to pro a es c v y; t e or er be n cnn cted supporting stud30,said studbeing adjustable in the sprocket-29acts as' a tensioning means forthe 95 I over the Ypul1eys'34 and 32. Anarm--36 pivoted to the carriage in the usual manner. The crank 5' isrigidly-connected to a short shait 7 journaledin the frame 1, said shaftcarrying a bevel" gear 8 at'its lower end.- This bevel gear 8 mesheswith a similar bevel gear9 mounted onla shaftlO which so extendslongitudinally of the base of the machine.

the same is rigidly mounted on the shaft 10 and 4 to reciprocate throughthe gears 8 and 9, crank 65,

5 and connecting ;rod 6. The features of the-de-i viceso far describedare all old and well known.'

Rigidly securedtothebase member 1 is a bracket 13 whichrotatablysupports the shaft 14 carry-.: ingith'e knife .15. The shaft 14carriesasprocket- 16 over which is trained the'chain .1'7', the-latterbeing used to drive the sprocket when actuated by mechanismwhich I will.now, proceed to dese f be. I 1 I Referring more particularly-to Fi'gs.1,-2 and-3, it will be noted that the bracket 13 also supports a hollowdrive shaft 18 having a longitudinal bore 19 for a purpose which willappear'later. Suitable anti-friction bearings 20 and .21 are interposedbetween the bearing22 of thebracket ,3 and the 330 hollow rotatableshaft 18 {The hollow rotatable shaft 18 is adapted to support thesprockets '23 by means of the chain 25 to a gear 26 mounted on as'haftiZZYdriven by-means ofabevel gear 28 from the bevel gear 8 on theshafti'l; A'sprocket' 48 freely rotatable on a stud49 'engagesthe chain25 and acts as a belt tightenertherefor, the stud 3.9 beingadjustable'in the longitudinal slot 50'fin the bracket 13'. -Thesprocket 24 also has the chain 17 trained thereover and this jchainiisalso trained over-the sprocket 29 freely rotatable on a thelongitudinalslot 31 inthe bracket 13 so that a chain 17. :Inother'words, the "chain 1'7 istrained over the sprocketslG, 23 and 29;the latter being adjustable to impart a. suitable tension. to thechainl'l. 1

The hollow shaft 18, also rotatablysupports Ca pulley 32 and this pulleyis adapted to be driven by. means of a motor 33 havingga'pulley34'thereeon; through the intermediary of the belt 35 trained at"37 carries aroller 38 at its free endand this roller is yieldinglyurged-intojengagement with a a run of the belt 35 'b'y means of a spring39 connected to the arm 36 intermediate its ends and to thebracket-.13'at 40. The/arm -36; acts;as; a belttightener forthebelt'35.";:-1 .1'16

The motor 33 acts as a power means fordriving the carriage and'theknife, or either one separately, and the handle 12 is the manual meansused for selectively driving the knife and carriage,

or the carriage only, as may be desired. However,

if the sprockets 23 and 24 and the pulley 32 were rigidly connected tothe hollow shaft 18, it would only be possible to drive the carriage andknife in unison and, when the manual means was being. used, it would benecessary to drive the motor as well as the carriage and the knifeunless means I were provided for preventing this. In the device iillustrated in the drawings, however, applicant has disclosed a meansfor rendering the power driving means inoperative when the manual meansis being used to drive eitherthe carriage, or both "the carriage and theknife, and means has also been provided for permitting the manual meansand power means to selectively operate either the.

carriage orthe knife, or both, as the case may be. This resulthas beenaccomplished by means of suitable clutch devices interposed between eachof the sprockets 23 and 24 and-the hollow shaft '18, and alsobyproviding a suitable one-way clutch device between the pulley 32 and thehollowshaft 18. t f

Aswill be more clearly seen in Fig. 6, the pulley 32' is rotatable on ahub portion'4l keyed to the hollow shaft 13 by means 'of a'key 42.portion 41- has a pluralityof recesses 43 therein, eachof which has acam surface 44, and a roller is interposed between the cam surface 44and theadjacent surface of'the pulley 32.: Each of I the rollers 45 isurged in a clockwise direction by 'means'of a spring 46 bearing againstthe hub portion 41 adjacent-one end of the recess 43 and the bottom .ofa recess in a suitable abutment member 47 which engages the roller 45.4It will .in the recess54 also "has an enlarged'conical be noted from aninspection of Fig. 6 that, when.

thepulley .,32 is rotatedin-a clockwise direction,

the rollers 45 are rotated in a clockwise direction due to their"engagement with'the pulley 32 and this has a tendency to roll therollers 45.over

the cam surface 44 towards the end of the recess 43 away from the spring46. Since this end of the recess 43 is'of less width than the diameterof the, roller 45, the roller is wedged in between the camsurface 44 andthe pulley 32, thuscausing the hub portion 41, to becarried in aclockwise direction along with the pulley 32 as the latter] is rotated.However, it will be noted thatif the hub portion 41 is rotated insteadofthe pulley 32, the latter will remain stationary, since the rollers45will then be rotated ina COllIltBI'rClOCkWiSG direction so as to tendto move said rollers into the larger portion of the recess 43. Theadvantages of this constructionvwill appear later.

. The mountings for. the sprocket 24 and the sprocket. 23 are identicalbut will be referred to by different reference numerals in order thatthere will beno confusion inthe "description; Referring now to Fig, 4,.it will be noted that the sprocket 24 is rotatably mounted on a hubportion 51 which is keyed tothe hollow shaft 18 by' a-suitable key 52.The hub portion 51 hasaplurality-of recesses 53 and 54 adapted toreceive the pins 55. 'The'pin 55 in the recess 53 is surrounded by aspring 56 which abuts against, the enlarged conical head 57 on the pinand one end 58 ofthe recess 53. The pin 55 head 57 and-a spring 56-which surrounds the pin and is interposed between the enlarged coni-'cal head 57and' a removable abutment 59. held in place within the recessby means of a suit'able' the. hub portion 51. 'has a cam surface 63 suchas to make the recess The hub 7,

pin 60 (Fig. 3) or by any othersuitable'f'astem ing means. 56 normallyurge the pins 55 toward the center of the hub portion 51. Each of thepins 55 is provided with'a conical point .61 at its outer end.

In Fig. 4, the pins are shown in their extended position. In thisposition, the pins extend into the recesses 62 formed in the outerperiphery of Each of the recesses 62 62 smaller at. oneend than at theother. Each of the recesses 62 has a roller 64 therein which extendssubstantially, the entire width of the hub portion, as best illustratedin Fig. 3.

.This roller 64 is,norrnally urged toward the smaller end of the recess62 by means of the springs pressed abutment. 65 which has a spring 66fitted within a recess 6'7 of the abutment memberand" It will be notedthatv the springs adirection opposite to the direction in which thesmaller ends of the recesses 62 extend. Each of; these recesses68is-also provided with rollers 69, abutments 70, springs '7l.and camsurfaces 72, which-are constructed in'tne same manner asthe rollers 64,abutments 65 and springs 66.-

Itwill, be noted, however, that there is no positive means for renderingthe rollers69 inoperative for a purpose which will be described later.

'In Fig. 5, I

is identical with. the construction' of the hub portion of the sprocket24shown in Fig.4, but in Fig. 5 I, have shown the pins in retractedposition instead of in extended position, as in Fig. 4. It isunnecessary to proceed with a lengthy descriptionof Fig. 5, itonlyibeing nec-. essary to state that the parts 51 and 53' to have.shown the construction of. the hub portion for the sprocket, .23 andthis72', inclusive, shown in Fig. 5, correspond with" the identical parts 51and 53 to'72, inclusive, shown in Fig. 5..

1 A means is provided for selectively. extending or retracting the pins55 and'55', asdesired, This means comprises a rod SO'having a bea ingportion '73' slidablewithin the recess 19 and bearing againstftheperiphery thereof, and also has an enlarged portion 74 also acting as a.

bearing portion for guiding the rod 30 within the recess 19 and thisenlarged portion has-the oppositely inclined facesxi75 and '76 and theV-shaped groove77. The rod is provided with a suitable operating knob.73 secured to one end' thereof by means of thespin 79, or othersuitable fastening means. is shown in its middle orfneutral positionandin this position, the pins 55 and 55 are re- In Fig. 3, the rod 803 in jtracted'by the action of the springs 56 and 56, and the rollers 64 and64' operate inthe same manner as they. would ifthe pins 55 vand 55' werenot included in the hub structure at all.

However, longitudinal movement of the rod 80 to the left causes theconical portions 57' of the pins 55' to rideup over'the inclined portion75 and into the recess. 77 of the'enlarged portion '74.' This throws thepins 55' into the position shown for thepins 55 in Fig.4. A simi-- areextended, the-pins 55 are retracted and' vice versa. e

I will now proceed to describe the operation of the device'when the rodis in each of;

its three positions of adjustment. For the purposes of description, wewill refer to the middle position as the neutral positionand tothe othertwo positions of the rod 80 astheright' and the left positions, theterms rightand left referring to the parts as illustrated inFig, 3.

Assume first that the rod 80 is in its neutral position. In thisposition, the pins 55 and 55' are retracted so that the ro1lers64 and64' o ccupy the positions illustrated for the rollers 64 in Fig. 5. Iwill consider first the action of the device when driven by means of theflyof the chain 25 and in a clockwise direction, as

viewed in Figs. 1, 4 and 5. Referring more'particularly to Fig. 5, itWill benoted that rotation of the sprocket 23 on the hub 51 will causethe rollers 69' to rotate in a clockwise direction towards the smallerend of the recesses 68' and will cause the rollers to bind. between thecam surfaces 72 and the inner bearing surface of the sprocket 23,thereby causing the hub portion 51 torotate with thesprocket 23. Thisalso causes rotation of the hub portion 51 due tothe fact that the hubportions 51 and 51 are both keyed to. the hollow shaft 18. The rollers64',

however, are also rotated in a'clockwise direction but towards thelarger ends of the recesses 62' and therefore there is no bindingconnection between the rollers 64" and the inner periphery of thesprocket 23, although the rollers 64. are held lightly in contacttherewith by means of the springs 66'. I l I Since the hub portion 51 iscaused to rotate with the hub portion 51', there is a tendency for thecam surface 63 of the hub portion 51 to rotate the rollers 64 in acounter-clockwise direction so that the same are moved towards thesmaller ends of the recesses 62, thereby causing the rollers 64 to bindagainst the inner bearingsurface of the sprocket 24 so that the same iscaused to rotate with the hub portion 51. The hub portion 51 also has atendency to rotate the rollers 69 in a counter-clockwise direction buttowards the larger ends of the recesses 68, so that while the rollers 69are held yieldingly in contact with the inner bearing surface of thesprocket 24 and the cam surface 72, there is nobinding contacttherewith. Since the sprocket 24 is caused to rotate with the hub 51when the rod 80 is in its neutral position, the knife will be driven bymeans of'the chain 17 trained over the sprocket 24 and the sprocket 16,the latter being rigid with the knife spindle. 4 is also caused toreciprocate through the connections previously described in View of thefact that there is always positive driving connection between thefly-wheel 11 and the carriage 4.

Assuming that the rod780 is still in its neutral position, it will benoted that although the carriage and the knife are caused to reciprocateby.- the manual operation of. the fiy-"wheel.11',there I is keyedthereto, there is no positivedriving con-i ends of the recesses, 43against the action of the T the the same to rotatetherewith and,therefore,

] same to bind against the adjacentbearing surof the slicing machinedescribed.

The carriage" is no rotationii'mparted to the pulley 32 View. of thefact thatwhile the hub v41 is caused to I rotate with the shaft 18 dueto the fact 'thatit nection between the hub/11 and the pulley: 32 due tothe fact that:a counter clockwise rotation is imparted to the rollers 45and this has a" tendency to force the rollers'45 toward the largersprings 46 sdthat. while the rollers 45 aregyield ingly held in contact:with the bearing surfaceof the: pulley 32 adjacentth'e outer peripheryofthe hub 41, there is no I positive binding contact between the rollers45 and the'pulley 32 to cause the pulley 32 will remain at rest, thusforming an automatic means which permits the power driving means toremain at rest whenever the hand operating means is being used. I v 1However, it will be noted that when it is desired to drivethe machinebymeans of the motor, motionis imparted-in a olockwise'direction to thepulley 32 and this moves the rollers 45 towards the smaller ends of therecesses. 43, causing'the face on thepulley 32 so that the hub 41'iscaused v to rotate with the pulley 32. This rotation of course, alsoimparts rotation tothe shaft 18 and l the hub po'rtions 51 and \51' ofthe sprockets 24' and 23. With the rod 80 in' its neutral positiorr10'5and with the shaft 18 power d'riven, motion ,is imparted to thesprocketsf24 and 23by means? of therollers 64tand 64",respectively,:asthe driV- ing is now being done by the hubportions and.wheneverthis is done, the rollers 64 and 64" form '110 I gear'28, gear8,'shaft 7', crank 5fan'd connecting"11*5-'- rod 6, and the knife 15 isalso positively driven by means of the chain 17 trained over thesprockets 24 and16. v I

From the above description,itwi1l be seenrthati when the rod 80 is initsneutral position; the carriage will. be reciprocated andthe'knife'will be rotatedwhether the machine .is power-drivenor manuallydriven- This is-the usual position of the rod 80: whileslicingvsubstancesv by means If, now, we assume that the rod 80- isshifted to the left, it will be noted that'the rollers 64' in the hubportion 51 are rendered inoperative due to the fact that the pins 55force'therollers 64", towards the :larger ends of the recesses 62'. If,now, the fly-wheel'll is rotated, the sprocket 23' isrotated the same.as before by means of the chain 25 and motion will'be imparted to thehub 51' through the rollers-69' which are forcedinto the smaller ends ofthe recesses 68, the same as when the rod 80 is in its neutral position.Again, the hubs 5 1and 41 arecaused to rotate with the hub 51 andmotion-is imparted to the sprocket 24 by means of the rollers 64, thesame as before; and the knife is rotated, it being understood thatwhenever the manually operated means is being used, thecarriage is alsoreciprocated, 'Theipulley 32 remains at rest as before; r

Assuming, however, that it is desired touse the power drive whentherodSOis in the-lei't-hand 145 position,'it will benoted that, then,the pulley' 32 willldrivethe hub 41 and cause rotationbf' the hubs 51and 5.1 Rotation of the hub 51 will cause rotation of the sprocket 24'and'consequently' the knife'1'5" due to theifaot. that 't h ar I vrollers64 are forcedi'nto the" sm'allerendsot the recesses 62. However,the rollers 64' associated with the hub portion "51", have been renderedinoperative by the pins 55' and, therefore, no

riage 14 will remain at restor maybe mo-ved by means of-the fly-wheel11' and associated mechanism at a speed which is not greater than thespeed at which the carriage would. be moved if'driven by the motor.

Therefore, when the rod 80,15 in its left-hand position,'the'mot'orwilldrive only the knife,

and the carriage maybe moved as desired by themanual. control. Thispermits the "knife to a be" sharpened while being driven by the motorithout the necessity of drivingthe carriagaand also'perrnits thecarriage tobe'moved to a position where the parts ground off of theknife willi not fall thereon, it being undesirable. to have any foreignmatter deposited on theslicing machine carriage. Withthis arrangement,it'is also possible to rotate the knife at a constant speed while thecarriage is reciprocated at any desired speed; depending upon thecharacteristics of the substance being sliced, some substances requiringa longer draw out than others and the most efficientslicing thereofwould not be'accomplished by having a carriage driven at a speed whichis always proportional to the speed of the. slicing knife. l r

:Let us assume, lastly, that the rod SOis'in its right-hand. positionasseen in Fig; 3'.l This renders the rollers 64: associated'with the hubporw tion 5l,"inoperative. If, now, the manual means is'usedto'reciprocate the carriage, the sprocket 23 will again be rotated and,in turn, will impart rotation to the hub 51 through the rollers 69" inthe same manner as previously, and the hub portions 51 and il'are alsocaused to rotate, the. same being rigidly connected 'to' the shaft 18.:

However, nomotion .will be imparted .to the sprocket 24 from thehubportion 51 view of thefactithat the rollers-64 are inoperative. to.impart rotation to the sprocket 24 and the rollers j 69' can notimpartrotation to-the sprocket 24 because a rotationof the hub 51 in aclockwise,

direction hasa tendency to ,move the rollers 69 into the'larger endso-f'the recessesdil, so that there is no positive binding contactbetweenthe rollers 69 and the sprocket 24. Since thespr'ocket. 2a is notrotated, no motion is imparted tothe If,fno-w, the motor is started,motionwillbeimparted to the hub 41' and, as a result;

knife 15.

the hubs 51 and 51'. Again, since therollers 64 are renderedinoperative, no motion is-imparted to the sprocket 24, butmotion isimparted to-the sprocket 23 by means of the, rollers 64 which are inoperative position due toythe fact that the pins 55. are retracted.Thus, the chain 25,'and, as a result, the carriagel, are positivelydriven; In other words, with the rod in itsright hand position, motionis imparted to the, carriage but not to the knife by either the manualdrive or the motor drive. This arrangement is particularly desirablewhen slicing substances such as cheese,

' which is more readily sliced by a knife which is "free to rotate butnot positively driven than by a knifewhich positively driven. In otherwords, the material is forced against the edge of by the operator isprotected in case either the,

eating said table, va clutch interposed between the knifev th'e carriageis recipr'ocate'd and the knifeipresses its way through the'substanceand forms slices which are moreuniform' and heater in appearancethanthcse cut'by means of or (0) while the carriage is recip'rocated byhand; and (d) the. carriage can be reciprocated while the kniferemainsat rest. By turning the fly-wheel ll: (6) the carriage and knifecan be driven in unison 1 and (f) the carriage can be.reciprocatedwhile' the kniferemains at rest..

A housingill on the bracket 13 has a cover plate. 82. This housingsubstantially encloses the driv ing connection. between theinotor andthe shaft 18. A projection flange 83 extends outwardly from the housing.81 and substantially protects the sprockets23, 24, 29,48 and as well asthe, chains 25 and 1'7, and also forms a means wherechain 17 or thechain 25 is broken.

The slicing. machine is also provided'with a de-.

flector 84, fastenedby means of the screws 85 to particular meansfor-driving the sprockets 23 and ZifrOm'thehub portions 151 and 51,respectively, or. for driving the hub portions by means i oftherespective sprockets, I do not wish to be well known equivalentsthereof can be used with-,. outdeparting from the spirit and scope of myinvention. Q

The driving connection between the pulley 32 and the hub 41 may also bevvaried, if desired, the

essentialfeature of the drive between the pulley 32 :and the hub l'beingthat motion can be imparted to the hub' il by the pulley 3211311111101to l the pulley 32 by the hub 41.

Also, I wish it to be understood that my inven-' tion is capableofbeing-usedwith machines of a type different than, that illustrated. Inother words, the invention'is also applicable to slicing 1 machines inwhichthe carriage is pivoted, rotated or similarly mounted, and in whichthe knife may bemoved instead of the carriage, and in which the knifemay have other movements than one purely of rotation. x 1

If desired,.the fly-wheel ll maybe mounted'on the shaft 10 in a mannersimilar to the manner in which the pulley 32' is mounted onthe shaft 18.Such an arrangement'will'permit the flywheel toremain at rest while thepower means is l beingused. a w r i 1 Obviously thoseskilled the art maymake various changes in the details arrangement of parts withoutvdeparting from spirit and scope of the invention as defined by theclaims hereto appended, and I therefore do not wish to be restricted tothe precise construction herein disclosed; I a 1 Having thus fullydisclosed an embodiment of my invention, what I claim and desire tosecure by LettersPatentof the United States is:

1 Aslicing machine comprising a slicing knife, a table adapted toreciprocate relatively thereto,.. manual means forrotating said knifeand reciprolimited to-the specific means shown as any, of the motorwhile permitting .said clutch to remain operative with respect to the:manual driving means for said knife and said carriage;

3. A slicing machine comprising a reciprocating table, a rotatableknife, interconnectedmeans for normally driving said table and knife inunison when motion is imparted to either'one or the other by a suitabledriving means, a clutch included in said means for driving said tableand knife in unison, said clutch comprising a plural ity of elementsnormally caused to rotate in unison with each other by means of aplurality of friction devices acting in opposite directions, a

power means foropera-ting said knife through said clutch, a manual meansfor-operating; said table and knife through said clutch, and means forrendering one of said friction devices inoperative so that thedrive tosaid knife from said power means is inoperative at the same time-thatthe drive from said manual means'to said knife is inoperative. i

'4. A slicing machine comprising arotatable slicing knife, a carriageadapted to reciprocate relatively thereto, manual means for driving saidcarriage and knife, a clutch included in said manual drivingmeans, saidclutch comprising a plurality of rotatable elements, one of which isconstrained to move a definite remnan s said carriage at all times, theother of which has opera- I tive connection. with said knife, a-pairofmeans interposed between said'elements' for operatively connecting saidelements in driving'relation each other, one of said last-mentionedmeans imparting rotation from one. element to' the other element whensaid first element is rotated in one direction, the other one of saidpairof means 1m parting rotation from the second-mentioned element tosaid first-mentioned element, each of said pair of rneans beinginoperative to operatively connect said elements driving relation witheach'other' in a direction other than that specified, power means foractuating said carriage through said clutch,and means for rendering oneof said pair" of means inoperative. I

5. Adevice-as claimed in claim 4 which includes a second'clutchinterposed between said manual driving means and said knife and meansfor'rendering said second clutch inoperative.

6. A "slicing machine comprising a reciprocat ing carriage, a'rotatableknife, two clutches'interposed between said knife and said carriageforoperatively connecting 'saidkn'ife and carriage so that they willmove in unison with each other,

each of said clutchescomprising a pair of rotatable members, frictionelements interposed between said members, some of said'friction elementsimparting rotation from one of said members to the other of said memberswhile others of said elements impart rotation from saidseco'nd-mentioned member to said first-mentioned member, and means forselectively rendering some of said elements'inoperative for the purposesspecified. V

, eachof said clutches comprising a; pair of rotat ments impartingrotation 'from'o'ne of said'm'em-l means.

7. A slicing machine comprising a reciproca' ing carriage, a rotatableknife, two clutches terposed between said knife and said'c'arria'ge foroperatively connecting said knife and carriage so that they'will move inunison with eachother,

able members, friction elements inter'posedbe tween said members, someof said frictionele bers to theother while others' of said elements- Limpart rotation from said second-mentionedmember to said first-mentionedmember,-'f'and means for selectively rendering some of said'ele meritsinoperative for the purposes specified com prising a cam member andco-operatingf pins adapted toengage selected ones of said elements" for'moving said elements" into"inoperative-posh tion' as said cam member isoperated.

a slicingknife ofa'substance support, and means for'driving saidknifeand'said support com ris: mg a rotatable shaft,'p'ower' meansfor actuatingsaid shaft, a clutcnmounted'onsaid shaft having two elements rotatablerelatively to each 7 other, {one of said elementsbeingmounted to rotatewith said shaft and the 'otlierof said ele-- ments being'operativelyconnected'to' said car riage, a manual means for 'actuating's'aid carriage and said second element, means fo'r causing both of saidelementsto rotate in unison with each other, operative connections" fromsaid shaft to said knifeso that said knife and carriage may be bothactuated byeither said power'meansj or said manual means while"said"elemerits j are causedto rotate with each other, and means fforrendering said elements free to move relatively to' each other, so thatthe drive tosaid carriage from said power means is inoperative and sothat said carriage maybe operatedby said-manualf 7 means while saidknife is rotated by said'fpower 10. A device as claimed incIaim-Qin-Which said elements have co-operating' spaced opposed;surfaces jbetween which are interposedfriction' elements which engagesaidf-oppo'sedsurfaces with sufiicient force to causesaid clutchelements to rotate in unison with eachother andinWhiCh means is providedfor rendering someof said;

operatively'connected to said manual means so asto rotateltherewith andthe other of said elements being operatively connected to said powermeans to rotate when said power means is actuated, a tapered recess'inone of :said elements, afriction element arrangedwithin said taperedrecess between said elements and normally adapted to contact with bothof saidelements to cause said elements tokrotate in unison-witheachpther when one of said elements is rotated i being adaptedtocausesaid Clutch-elements to rotate-in unisonwith each other when oneof said clutchelements is-actuated by its driving in one directiomasecond tapered recess extending in the opposite direction to said firsttapered recess and being formed-in the same one of said elements as saidfirst recess, a'friction element in said second recess adapted tonormally contact with both-of said. clutch elements when the other ofsaid clutch elements isrotated inv the same direction, and meansfor;rendering one of said friction'elements inoperative so that thedrive throughsaid clutch by one of said driving means is renderedinoperative... r

:12. In a slicing machine the combination with a carria ge, ofa'rotating knife, power'means'for. rotating said k'nife,;manual meansfor reciprocating said table, a clutch arranged between the drive forsaid carriage and the drive for said knife'comprising a plurality -.ofrotatable elements, one of said elements being actuated by saidmanualmeansandtheother of said elements being actuated by said powermeans, two

sets of friction elements arranged between said i clutch elements, oneset of saidfrictionelements means and the other set of saidfrictionfelements being adapted to cause-said clutch elementsto rotatein unison with each other when the other i of said clutch elements isactuated, and means for rendering one of said friction elements in.-

. a carriage, of a rotating knife, powerimeans for,

- operative to thereby disconnect the drive through 'said clutch fromone of saidactuatingmeans;

13. In a slicing machine, the combination with rotating saidknifemanual'means for reciprocating said tabla-a clutch arrangedbetween, the

drive for said 'carriage and the drive for said knife comprising aplurality of rotatable ,ele. ments, one of ,said elements beingactuatedby said manualmeans andthe other of said elements 1 beingactuated by said power meanatwo'sets} of friction; elements arrangedbetween said clutch elements, one'set of said friction elements,

being adapted to cause said, clutch elementsto rotate in' unison'witheach otherfwhen one; of

- said clutchelements is actuated by its driving.

means, the othervset of said frictionelements being adapted to causesaid clutch elements torotate in unison. with each other whenthe-otherofjsa id clutch; elements is actuated, and means for renderingone-of said sets of friction elements inoperative to I therebydisconnect the vdrive through said clutch from one of said actuatingmeans comprising. a pin, and cam "means for moving said pin against.said friction element to thereby:v move said friction element out ofopera tive position. 1 I

ment, operative connection between said second j 17, In aslicingmachine, the combination with? V clutch element and said knife, a manualmeans for driving said shaft, power means for driving said shaft, andmeans for moving said driving element. into inoperativeposition so as torender. the drive to said knife through said clutch inoperative, saidpower means'and said manual means beingalso operatively connected tosaid carriage to drive the same independently of said drive to said,knife. 7 W 1 v a A 15. A device as claimed in claim 14 in'which thedrivingmeans for causing, said clutchielee ments to move in unison witheach other comprises a friction roller'interposedbetween said elementsandbeing adapted to frictionally engage both of said elements when saidfirst element is; actuated and inwhich the means for rendering the saiddriving means, inoperative comprises a pin for moving saidfrictionfroller out of normal operative position, and 'a cam foractuating said pin.

, 1'6. In a slicing machine, thecombination with a slicing knife,- of acarriage movable relative thereto, means fordriving said carriage, meansfor rotating said knife independently of the drive to said carriage,aclutch for connecting said knife to said carriage driving means, ,asec- 7 0nd clutch. f or connecting said carriage to said disconnectingthe drive from the other of said I elements to the, first of saidelements. f

a carriagaof a knife me'ans for manually re ciprocating said carriage,power means-for actuating' said knife, a clutch for connecting saidpower means-to said carriage so-that said car-1 a,

ria'ge may be'driven bysaid power means-,means for connecting said knifeto "saidmanual means so that said knife "may be actuated by said thedrive to either-said knife or said carriage from i said power meansinoperative, means for selectively connecting and disconnecting said'manualmeans, means for selectively rendering manual means tosaid'knife,andmeans for pre f venting the rotation of said powenmean's by saidmanual means when said manual means is being actuated.

18..A slicing m achinegcomprising a knife and carriage movable relativeto each other, ,said' knife being also mounted for rotativ'e movementabout'its axis, mechanismfor moving-said knife and tableirelative'toeach other, mechanism for rotating said knife, :two separate drivingmeans,

and a clutch interposed between both of .said mechanisms and each ofsaid driving means'comprising aplurality of elementsrotatable relative,

to each other, a plurality of connecting elements,

arranged between said clutch elements, some of; said connecting elementsbeing operative to cause rotation of both of said elements in unisonwith each otherwhenjone of said elements is actuated in one directionwhile permitting free movement:

ative without destroying the operativeness of the.

remaining elements.

19. A slicing machine comprising a knife and carriage movable relativeto each other, said knife being also mounted for rotative movement aboutits axis, mechanism for moving said/knife and table relative to eachother, mechanism for rotating said knife, two separate driving means,and a clutch interposed between both. of said mechanisms and each ofsaid driving means comprising a plurality of elementsrotatable relativeto each other, a plurality of connecting elements arranged between saidclutch elements, some of said connecting elements being operative tocause rotation of both of said elements in unison with each other whenone of said elements. is actuated inone direction whilepermitting freemovement relative to each other in the opposite direction and some ofthe others of said connecting elements being adapted, to cause rotationof both of said clutch elements in unison with eachother when the otherof said clutch elements is rotated in the .samedirection as the firstmentioned clutch element while permitting relative movement of saidparts in the opposite direction, and vmeans for rendering all of theconnecting elements having the same identical purpose inoperativewithout destroying the operativeness of the remaining elementscomprising a plurality of pins normally spring-pressed out of a positioninwhich they will render said recess in said clutch element, a secondclutch,

element rotatable'relative to said first clutch element having a surfacethereon opposed to said inclined surface of said recess, a frictionelement arranged between said clutch elements adapted to be wedgedbetween said surfaces when one of said elements is rotated, a pincommunicating with said recessv and adapted to be engaged by said cammember so that when said cam member actuates said pin, said pin willmove into said recess and prevent said friction element from wedgingitself between said opposed surfaces thereby preventing the rotation ofsaid clutch elements in unison with each other when one of said elementsis rotated in the direction which normally causes said movement of saidelements in unison, mechanismsfor moving said knife and table relativeto eachother, and an operative connection from said clutch for drivingsaid mechanism for driving said table and knife relative to each other,the disengaging of said friction elemen by said pin resulting in thedisconnecting e of the driving through said clutch to one of saidmechanisms.

- 21. A device as claimed in claim 20 in which one of the clutchelements is provided with an additional recess similar to said firstrecess and in which said recess has a friction roller which is adaptedto cause said clutch elements to rotate in unison with each other whensaid first;

friction :roller is 1 inoperative and the. other of said elements isactuated 'in' one direction.

, 22. Ina slicing machine, the combination with a reciprocatingcarriage, of a" rotatable knife adapted to.slice substances'onsaid;carriage,.' manual means for actuating said carriagaea shaft, powermeans for actuating said shaft,-a'

connection from said shaft to saidknife'; a clutch Y,

being operatively connected to said power means v to rotate whensaidpowerfmeans is actuated, a tapered recess in one of said elements, afriction element arranged within f saidltapered recess be tween' 'saidelements and normally adapted to contact. withboth of said elementstocause said elements 'to rotate. in unison with each other when one ofsaid elements is rotated in one direc tion, a second tapered recess inone. of said elements, a friction element in said second recess adaptedto normally contact with one of said clutch elements when the other ofsaid clutch ele- 1 05 ments is rotated in the same direction, and 1means for rendering one of said friction elements inoperative so thatthe drive through said clutch by one of" said driving means is renderedinoper ative.' V

23. In a slicing machine, the combination with a rotatable slicingknife, of a ,carriage'adapted to reciprocate past said knife, drivingmechanism connecting said carriage and knife to cause them to move inunison with each other, a clutch .1 insaid driving'mechanism, aplurality of means for actuating said driving mechanism'operatingthrough said clutch to cause said knife and carriage to move in' unisonwith each other, andmeans for renderingsaid clutch inoperative for oneof said actuating'means only; i

2a. In a slicing machine, the combination with a rotatable slicingknife, of a carriage adapted to reciprocate relative thereto, a drivingmeans for actuating-said knife and carriage simultane 1 ously, a seconddriving means for actuating said knife and carriage simultaneously, aclutch mechanism between said two driving means, said clutch mechanismincluding two cooperating elements oneof which is adaptedtozbe'drive'nfrom one-,1 of said driving means and the other of which is driven fromthe other of said driving means whereby movement is imparted to saidcarriage and knife when either element is driven, operative engagingmeans between said clutch ele- 1 ments, and means for actuating saidengaging means including means for rendering said clutch mechanisminoperative to impart reciprocation to said carriage when one of saiddriv lng' means is being operated while maintaining the driving. 1relation to said knife when the other of said driving means is beingoperated.

25. In a slicing machine, the combination with a reciprocating table,of'a rotatable knife, manual means for driving said table, a clutchcompris- 1 ing a pair of relatively rotatable elements, oppositelyactinggroups of frictiondevices for operatively connecting said elementsin driving fr'ements being operativewhen one of said elementsl and saidknife, power means for actuating said last mentioned element, a drivingconnection between said manual means and said second mentioned element,whereby when both of said groups ofiiriction devices are operativa themanual ac tuation of said table also actuates said knife through saidclutch elements and. also when said power means is actuated, saidknifeand table are. driven through the intermediacy of said clutchelements; and means for rendering said first mentioned group of frictiondevices inoperative so that the driving connection between said firstmentioned element and said second mentioned element is destroyed,whereby said second mentioned element remains at rest and the drive tosaid table from said element through said manual means is'inoperativewithout destroying the driving connection from said second elementtosaid first element, whereby 'sai-d manual means may be actuated todrive both said knife and table even though said powermeans is connectedonly in driving relation'to said knife.

26. A slicing machine comprising a rotatable slicing knife, acarriage'adapted to be'moved relatively thereto, mechanism for drivingsaid knife and for moving said knife and carriage relative to each otherincludinga double-acting clutch in said driving mechanism comprising'aplurality of cooperating rotatable elements, independent means foractuating each of said elements, a

' driving. connection from each of said'elernentsto said mechanism, fordriving said knife and carrendering only that portion of said lastmentioned driving means inoperative which drives" one of saidelementswhen'the other of said elements is merits does not rotate, and whilesaid clutch at riage, means for connecting either element in drivingrelation with the other, and means for m the same time remainsoperativeto drive said sec- 0nd element when rotative movementis'imparted to the first of said elements in the same direc tion .asthat imparted to said second element, means for connecting portions ofsaid mechanism directly to one oflsaid elementa'and means for 7connecting other portions of said mechanism directly to the other of.said elements, whereby upon rotation of the respective elements, onlythe portions of said mechanism connected thereto are actuated. jFRANCISCUS L; VAN WEENEN.

